V1.4 OEM

v1.4 Change Log

Improvements
• Ported to KiCad v8
• Updated schematic symbols to the new KiCad v8 symbols
• Organized and labeled modules in the schematic
• Updated gerber and drill export settings
• Excluded known DRC errors
• Added comments in schematic and PCB layout
• Marked some components as Do Not Populate (DNP)
• Thickened some traces and updated some zones for stability

Fixes
• Fixed the expansion port footprint
• Added back missing components from OEM NES
• Component's footprint to be consistent

New Features
• Added scans for reference
• Added BOM in the repo

V1.4 Modded

Improvements
• Ported to KiCad v8
• Updated schematic symbols to the new KiCad v8 symbols
• Organized and labeled modules in the schematic
• Updated gerber and drill export settings
• Excluded known DRC errors
• Added comments in schematic and PCB layout
• Marked some components as Do Not Populate (DNP)
• Thickened some traces and updated some zones for stability

Fixes
• Fixed the expansion port footprint
• Added back missing components from OEM NES
• Component's footprint to be consistent

New Features
• Added scans for reference
• Added BOM in the repo
• Added SOIC footprint for SRAMs

ONES-CPU-01

• Fixed errors in BOM
• Fixed outdated RF Modulator footprint
• Added silkscreen denoting PAL and NTSC X1 frequencies (see note about X1 frequencies below)
• Added mask layer to edge connector to remove soldermask from the mating surfaces
• Added JST footprint for future open source power/reset button PCB

Notes:

The X1 crystal in the BOM is for an NTSC board, if you want to make a PAL board, you will need to use a PAL CPU, a PAL PPU, and a PAL crystal (26.601712MHz) instead of NTSC.

A few parts aren't in the BOM due to mainstream component suppliers not stocking them,
so they will have to be bought separately.

They include 1 30pF trimmer capacitor (Can be found on Aliexpress), 1 4-resistor 6.8K common bus resistor array (Can be found on ebay or similar sites), 2 DAN601 diode arrays (Can be found on UTSource), 2 UPA64H diode arrays (Also UTSource), 1 2SA937 transistor (Can be found on Ebay), and 2 2SC2021 transistors (Also Ebay).

You will of course have to source either an original CPU and PPU, or aftermarket parts.

ONES-CPU-01

ONES-CPU-01 V1.1

+Added plated layer to edge for RF shield
+Improved silkscreen to list unused parts as unused, and fixed overlapping labels
+Moved OSHW logo to accommodate the new plated area
+Added thermal reliefs to make soldering to power/ground pins easier
+Removed redundant files

Note:
A few parts aren't in the BOM due to mainstream component suppliers not stocking them,
so they will have to be bought separately.

They include 1 30pF trimmer capacitor (Can be found on Aliexpress), 1 4-resistor 6.8K common bus resistor array (Can be found on ebay or similar sites), 2 DAN601 diode arrays (Can be found on UTSource), 2 UPA64H diode arrays (Also UTSource), 1 2SA937 transistor (Can be found on Ebay), and 2 2SC2021 transistors (Also Ebay).

You will of course have to source either an original CPU and PPU, or aftermarket parts.

ONES-CPU-01

Completed BOM, updated Gerbers, and added .PDF schematic.

Note:
A few parts aren't in the BOM due to mainstream component suppliers not stocking them,
so they will have to be bought separately.

They include 1 30pF trimmer capacitor (Can be found on Aliexpress), 1 4-resistor 6.8K common bus resistor array (Can be found on ebay or similar sites), 2 DAN601 diode arrays (Can be found on UTSource), 2 UPA64H diode arrays (Also UTSource), 1 2SA937 transistor (Can be found on Ebay), and 2 2SC2021 transistors (Also Ebay).

You will of course have to source either an original CPU and PPU, or aftermarket parts.